Project overview
This prospective study evaluated postoperative pain in 97 patients undergoing Retrograde Intrarenal Surgery (RIRS) for kidney stones, with the goal of identifying factors predictive of severe pain. Pain intensity was assessed at 6, 12, and 24 hours postoperatively using the Visual Analogue Scale (VAS), categorizing patients into mild (VAS <7) and severe (VAS ≥7) pain groups. While no significant associations were found between demographic or stone-related factors (age, gender, stone size, location, density) and pain severity, two technical factors stood out. The use of smaller-diameter ureteral access sheaths (p=0.027) and sheath indwelling times exceeding 60 minutes (p=0.043) were significantly associated with higher postoperative pain levels. These findings suggest that minimizing intraoperative ureteral manipulation and optimizing sheath parameters can help reduce postoperative discomfort.
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